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A condensate collector is required for horizontal and/or vertical vent runs exceeding 5 ft. of
equivalent length (not including sidewall terminatons).
A backflow preventor should be installed in the exhaust when the heater is installed in climates
subject to freezing temperatures.
General rules for vent terminations:
Avoid locating the water heater vent termination near any air intake devices. These fans can
pick up the exhaust flue products from the water heater and return them to the building. This
can create a health hazard.
Locate the vent termination so that it cannot be blocked by any debris, at any time. Most codes
require that the termination must be at least 12 in. (305 mm) above grade and anticipated snow
level, but the installer may determine if it should be higher depending on the job site condition
and applicable codes.
A proper sidewall termination is required when the water heater is vented through a sidewall.
Refer to the following pages for exhaust termination and air inlet clearances.
Approved Category III, Single Wall, Stainless Steel Venting Suppliers and Part Numbers
WARNING! Do not mix parts or fittings of different material types, and do not mix pipe, fittings, or
joining methods from different manufacturers. Combustion exhaust can contain carbon monoxide and
must be properly vented outside. Breathing abnormal amounts of carbon monoxide can result in seri-
ous injury or death.
Description
Heater Vent Kits
Z-FLEX®
NovaVENT™ Z-VENT™
4" Straight pipe - 6" length
9007987005 2NVP4.5 2SVEPWCF0406
4" Straight pipe - 12" length
9007986005 2NVP41 2SVEPWCF0401
4" Straight pipe - 24" length
9007984005 2NVP42 2SVEPWCF0402
4" Straight pipe - 36" length
9007983005 2NVP43 2SVEPWCF0403
4" Straight pipe - 48" length
9007982005 2NVP44 2SVEPWCF0404
4" Adjustable straight pipe - 10"-18" adjustability
9007985005 2NVAL4 2SVSPA04
4" 45 degree elbow
9007981005 2NVE445 2SVEEWCF0445
4" 90 degree elbow
9007980005 2NVE490 2SVEEWCF0490
4" Sidewall termination (4"Termination Hood)
9007999005 2NVHTX4 2SVSHTX04
4" Vent termination tee
9008144005 2NVTT4 2SVSTTF04
4" Rain Cap
9007995005 2NVRC4 2SVSRCF04
4" Extreme weather rain cap
9008145005 2NVWC4 2SVSHRC04
4" Horizontal drain tee
9007994005 2NVHD4 2SVEDWCF04
4" Vertical drain tee
9007993005 2NVVD4 2SVEVDP04
4" wall thimble length 4"-7" wall thickness
9008345005 2NVWT4 2SVSWTF04
4" wall thimble length 5"-10" wall thickness
9008346005 2NVWT4L 2SVSWTEF04
4" 3-in-1 adaptor (F-F adaptor, condensate
drain, & back-flow preventer)
9008146005 2NVBFA4 2SVBFDPA04
4" F-F adaptor
9007979005 2NVAFF4 2SVEEWCF0445
4" Backflow preventer w/ F-F adaptor
9007996005 2NVBFU4 2ZVB04
4" exhaust / 3" intake DV concentric termina-
tion - 5"-10" adjustability
9008147005 2NVHTC43S 2SVSHTC43S
4" exhaust / 3" intake DV concentric termina-
tion - 12"-18" adjustability
9008148005 2NVHTC43 2SVSHTC43
4" Sidewall termination, adjustable pipe
9008899005 2NVBV4 n/a
4" Wall Thimble, 3"-6" wall thickness
9008898005 2NVBT4 n/a
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